I have an Icom IC-255A. With the exception of PL tone capability this radio has served me extremely well but I've run into a problem. It seems that my mic is no longer transmitting sound. I am hoping that it's not the radio and just the mic that has stopped working. The radio will still transmit a dead carrier.My question is this... When I bought the unit it came with an Icom IC-HM8 Mic. I do not believe this is the correct mic for this radio. Would anyone know if any 8 pin icom mic would work on this radio? My research has shown that there do seem to be slight differences in the mics, depending on the model.

I guess Icom's techs don't read their own literature. The HM-7 fits the following radios: 245, 260, 290, 451, 490, 505, 560, 720, 730, 740. The HM-10 fits the following radios: 25A, 251A, 255A, 260, 290A/H, 451, 490, 730. By the way, the HM-10 is a dynamic, and the HM-8 is an electrec condenser type with an amplifier. I suspect that is why it works okay, when it works!

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